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Questions and Answers
What powers the Earth system according to the text?
What powers the Earth system according to the text?
- Wind energy and tidal energy
- Radioactive decay and gravitational energy (correct)
- Geothermal energy
- Solar energy only
Which subsystem includes all life forms on Earth?
Which subsystem includes all life forms on Earth?
- Geosphere
- Hydrosphere
- Lithosphere
- Biosphere (correct)
What percentage of Earth's water is fresh according to the text?
What percentage of Earth's water is fresh according to the text?
- 10%
- 50%
- 3% (correct)
- 75%
In what form does much of the Earth's water exist?
In what form does much of the Earth's water exist?
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What is a closed system based on the text?
What is a closed system based on the text?
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Which theme emphasizes the different length and time scales of processes in the Earth system?
Which theme emphasizes the different length and time scales of processes in the Earth system?
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